The highest expected temperature tomorrow is 25, which is four degrees lower than today's max.

Warmer conditions are expected on three of the next six days, with the mercury climbing above today's maximum on Thursday, Friday and Saturday.

The chance of rain tomorrow is 20 per cent.

Showers are less likely Tuesday when the Bureau of Meteorology forecasts a slim (5 per cent) chance of rain.

The UV index is predicted to be 11. There is an extreme risk of harm from sun exposure. Unprotected skin can burn within minutes in today's conditions. Experts suggest looking for shade and avoiding sun exposure around noon. General advice is to take all precautions such as using eye protection, sunscreen and covering up.

Winds will be northwest around 12 km/h in the morning shifting to west around 21 km/h in the afternoon.

Details for the next six days:

Monday, December 1: Mostly cloudy. Fresh NW/W'ly winds Min - 13. Max - 25.

Tuesday, December 2: Mostly sunny. SW/SE winds Min - 11. Max - 23.

Wednesday, December 3: Sunny. W'ly winds tending NE Min - 12. Max - 28.

Thursday, December 4: Mostly sunny. NW winds tending NE Min - 15. Max - 34.

Friday, December 5: Mostly sunny. NW winds tending SE Min - 18. Max - 36.

Saturday, December 6: Mostly cloudy. Possible shower. NW/NE winds Min - 20. Max - 39.

The previous Parramatta weather article can be viewed here.